Nokia IPSO 4.0 manual Isdn Cause Values, Cause Cause Description Diagnostics

Table 5 ISDN Cause Code Fields

Cause Code Description

z1

z2

a1

a2

Class of cause value

Value of cause value

(Optional) Diagnostic field that is always 8.

(Optional) Diagnostic field that is one of the following values: 0 is Unknown, 1 is Permanent, and 2 is Transient

ISDN Cause Values

Descriptions of the cause-value field of the cause-information element are shown in the following ISDN cause value table. Cause-value numbers are not consecutive.

Table 6 Cause Values

Cause	Cause Description	Diagnostics
1	Unallocated (unassigned) number	Note 12
2	No route to specified transit network	Transit-network identity (Note 11)
3	No route to destination	Note 12

6Channel unacceptable

7Call awarded and being delivered in an established channel

16Normal call clearing Note 12

17User busy

18No user responding

19No answer from user (user alerted)

21	Call rejected	User-supplied diagnostic (Notes 4 & 12)
22	Number changed

26Non-selected user clearing

27Designation out of order

28Invalid number format

29 Facility rejected Facility identification (Note 1)

Nokia Network Voyager for IPSO 4.0 Reference Guide 67